body {
  font-family: "PingFang SC", tahoma, arial, "helvetica neue", "hiragino sans gb",
    "microsoft yahei ui", "microsoft yahei", simsun, sans-serif;
  margin: 0px;
  line-height: 1.5;
}

.wrapper {
  max-width: 1040px;
  min-width: 980px;
  margin: auto;
  padding: 0 20px;
}

.is-wide .wrapper {
  max-width: 1440px;
}

.is-wider .wrapper {
  max-width: none;
}
